Baking-powder.



s ecification of Letters Patent.

Patented isms 31, 1908.

Application flied m 20, 1907. Serial No. 384,814.

, To all whom it may concern:

Be it knownthat I, FERDINAND BLUMEN- THAL', a subject of the German Emperor, and resident of Biebrich-on-the-Rhine, Prussia, Germany, have invented a certain new and useful Improvement in Baking-Powder, of which the following is a specification.

Previously known baking powders contain, besides the usual bi-carbonate of soda for liberating carbonic acid, either acid salts of tartaric acid or lactic acid. I have now found that instead of these salts gl colic acid or its acid salts can be used whereby the advantage is obtained that the same mixture by weight of the said ingredients of the new baking powder yields a greater amount of caronic acid than that given by acid ingredients of baking owder reviously in use. This glycolic acid as the ormula salts the acid salts of glycolic I carbonate of soda is expressed by the follow ing equation Suitable proportions of the ingredients for making baking powderaccording to the invention are as followsz-(l) 17.4 parts acid sodium glycolate in the form of dry crystals, 8.4 parts bicarbonate of soda, and 7. parts of starch powder, or (2) 19 parts acid potassium glycolate, 8.4 parts sodium bicarbonate and 7 arts of starch..

liaving described my invention what I claim and desire to secure by Letters Patent of the United States is z- 1. Baking powder composed of glycolic acid and bi-carbonate of soda, substantially in the proportions described.

2. Baking powder composed of bi-carbonate of soda and acid salts of glycolic acid, substantially in the proportions described.

In testimony whereof I have signedmy name to this specification in the presence of two subscri bin witnesses.

FERD NAND BLUMENTHAL.

Witnesses:

MoRI z WETZEL, HEINRICH ,KREIS; 

